Lotus Elan

701M L block question

PostPost by: rgh0 » Fri Feb 03, 2017 1:28 pm

Yes LAA or LA blocks had thicker walls at the top end of the normal range based on the primitive measurement possible with specialist calipers through the casting core holes. Not many LA or LAA blocks to be found these days and cost is high but many more blocks from standard non L blocks can be found to meet that standard with modern ultrasonic bore thickness surveys and they are much cheaper. The blocks show no statistical difference in range of bore wall thickness from early 116E blocks to last 701M blocks. its all about statistical variation in the manufacturing technique which did not change from early Sixties to mid 70's

cheers
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PostPost by: Chrisis » Sun Dec 17, 2017 9:16 pm

is being a while, but now head and carbs are ready :mrgreen:
Attachments
carbs3.jpg and
carbs2.jpg and
carbs1.jpg and
head4.jpg and
head3.jpg and
head2.jpg and
head1.jpg and
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PostPost by: promotor » Sun Dec 17, 2017 10:10 pm

Nice - that's clearly the work of Nick Stagg!
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PostPost by: Chrisis » Fri Dec 22, 2017 3:37 pm

It took a while as he is involve in motorsport, but it was worth the wait as his work is excellent.

Now is time to put everything together.
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PostPost by: el-saturn » Fri Dec 22, 2017 5:00 pm

tbh: he's also my man!! the only difference is: i wanted to have my new head WITHOUT paint, as I prefer just having the block in ENTHUSIAST's GREY!! --------y------ maybe it's my professional backround and my interpretation of esthetics: P L U S: PAINT COVERS EVERYTHING!! :roll: :roll: :roll: :roll: :roll: sandy -- NS likes it, as we see!
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PostPost by: Chrisis » Fri Dec 22, 2017 11:38 pm

To be honest i just send him my twink head and i just asked him for a proper gas flow, big valve head with 420 cams good for 150hp for my escort twin cam :D

I will have my mechanic build my lotus engine in the next 2 months as i'm still waiting for dave beans modular water pump kit.

I will then run in/set up the engine in a flow bench.
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PostPost by: Chrisis » Fri Sep 27, 2019 10:47 am

just came back to give you a few updates for my engine build.

Did it finish? NOT YET :shock:

At least now i got all parts needed together and Graham from PENGUIN MOTORS in UK is building it at the moment.

It tool for ever as we found a few issues with conrod/piston length so i decided to go all steel and i got a 1600 steel crank from ikengineering and custom con-rods.

If you would like to see the build with pictures you can see them in http://www.turbosport.co.uk. I think you need to register and then search for lotus/ford twin cam.

or if possible just copy and paste http://www.turbosport.co.uk/showthread. ... ight=lotus

Hope you enjoy.
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PostPost by: Chrisis » Thu Mar 05, 2020 9:32 pm

It is being a while, but i finally got my engine results from the dyno.

I got my target 154hp at 6500 rpm.

Torque curve looks nice and flat 8)

I would of made 160+hp on 45's, but the bottom end power would of been rubbish.
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